So #Pixelfed issue encountered. The iOS Beta app failed a number of times trying to upload 9 photos in one post (10 is max). I noted in subsequent attempts after I’d lost all the bespoke alt text I’d written 1st time. When adding a post, the alt text is in a separate window after uploading photo. I found the edit post option has a much better view of photo and alt text on same page, great for multiple photos. I think the edit post view should be the std view when posting new photos. Far easier!